MID 151a,b,c & MID 153 a,b,c
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Airfoils MID 151 and 153 are designed for F1B, F1G and others 
rubber powered models. There are 3 variante of both airfoils 
with 3 diferent cambers.

Airfoils MID 151 a,b,c have thickness of 7.0% and cambers 
of 5.0%, 5,5%, and 6.0% respectively. 

Airfoils MID 153 a,b,c have thickness of 6.3% and cambers 
of 5.0%, 5.5%, and 6.0% respectively.

For all 6 airfoils it's sugested to use turbulator on the top surface
at 50% of cord for Re=40k. 

Picture show comparison of 3 good airfoils for F1B at Re=40k 
with top turb. at 50% of cord, namely AndViv-B6356b-Mid153b, 
and as can see MID 153b has the smallest drag, and the biggest 
band of usable attack angles.    

Slobodan Midic
Novi Sad, 2.Avg.2011.